changing steering wheel to multifunction

[Curtis]

i have the old steering wheel that looks alot like the old audi 500 one.i am wanting to upgrade it to the newer looking ones and i was wondering if anyone knows if its possible to get a multifunctional steering wheel to work on the car with tiptronic gear change buttons aswel.

i have read through other posts and seems like it is possible and found a pdf for a c5 A6 but i assume A8's are differant and i cant follow that document.
i dont think i have the multifunction controller as there are no buttons on the steering wheel. i also have the 4 speed tiptronic so i am not sure if it can be done with that gearbox.